I think part of the fear is what Kirk or Brian would say in the media if he did bench himself.Petras knows he is not good and should bench himself. He has to be accountable for his poor performance also. He's not blameless in this.
There's a real chance that Petras considers a transfer after the season with his final year of eligibility, imo. Rudock's story provides him a pretty compelling path forward. Transfer to another P5 program, have a really solid year with a fresh start and win some game, have a multi-year NFL stint as the 3rd of 4th QB in a room. I'm not saying that would happen or is even likely, but surely that's a more attractive option going forward than another year at Iowa.